//
//===----------------------------------------------------------------------===//
-#ifndef LLVM_MC_TARGETPARSER_H
-#define LLVM_MC_TARGETPARSER_H
+#ifndef LLVM_MC_MCTARGETASMPARSER_H
+#define LLVM_MC_MCTARGETASMPARSER_H
+#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCParser/MCAsmParserExtension.h"
+#include "llvm/MC/MCTargetOptions.h"
+#include <memory>
namespace llvm {
-class MCStreamer;
-class StringRef;
-class SMLoc;
class AsmToken;
-class MCParsedAsmOperand;
class MCInst;
+class MCParsedAsmOperand;
+class MCStreamer;
+class SMLoc;
+class StringRef;
template <typename T> class SmallVectorImpl;
-namespace {
+typedef SmallVectorImpl<std::unique_ptr<MCParsedAsmOperand>> OperandVector;
+
enum AsmRewriteKind {
- AOK_Imm,
- AOK_Input,
- AOK_Output,
- AOK_SizeDirective,
- AOK_Emit,
- AOK_Skip,
- AOK_DotOperator
+ AOK_Delete = 0, // Rewrite should be ignored.
+ AOK_Align, // Rewrite align as .align.
+ AOK_DotOperator, // Rewrite a dot operator expression as an immediate.
+ // E.g., [eax].foo.bar -> [eax].8
+ AOK_Emit, // Rewrite _emit as .byte.
+ AOK_Imm, // Rewrite as $$N.
+ AOK_ImmPrefix, // Add $$ before a parsed Imm.
+ AOK_Input, // Rewrite in terms of $N.
+ AOK_Output, // Rewrite in terms of $N.
+ AOK_SizeDirective, // Add a sizing directive (e.g., dword ptr).
+ AOK_Label, // Rewrite local labels.
+ AOK_Skip // Skip emission (e.g., offset/type operators).
+};
+
+const char AsmRewritePrecedence [] = {
+ 0, // AOK_Delete
+ 2, // AOK_Align
+ 2, // AOK_DotOperator
+ 2, // AOK_Emit
+ 4, // AOK_Imm
+ 4, // AOK_ImmPrefix
+ 3, // AOK_Input
+ 3, // AOK_Output
+ 5, // AOK_SizeDirective
+ 1, // AOK_Label
+ 2 // AOK_Skip
};
struct AsmRewrite {
SMLoc Loc;
unsigned Len;
unsigned Val;
+ StringRef Label;
public:
- AsmRewrite(AsmRewriteKind kind, SMLoc loc, unsigned len, unsigned val = 0)
+ AsmRewrite(AsmRewriteKind kind, SMLoc loc, unsigned len = 0, unsigned val = 0)
: Kind(kind), Loc(loc), Len(len), Val(val) {}
+ AsmRewrite(AsmRewriteKind kind, SMLoc loc, unsigned len, StringRef label)
+ : Kind(kind), Loc(loc), Len(len), Val(0), Label(label) {}
};
-}
struct ParseInstructionInfo {
SmallVectorImpl<AsmRewrite> *AsmRewrites;
- ParseInstructionInfo() : AsmRewrites(0) {}
+ ParseInstructionInfo() : AsmRewrites(nullptr) {}
ParseInstructionInfo(SmallVectorImpl<AsmRewrite> *rewrites)
: AsmRewrites(rewrites) {}
MCTargetAsmParser();
/// AvailableFeatures - The current set of available features.
- unsigned AvailableFeatures;
+ uint64_t AvailableFeatures;
/// ParsingInlineAsm - Are we parsing ms-style inline assembly?
bool ParsingInlineAsm;
/// ms-style inline assembly.
MCAsmParserSemaCallback *SemaCallback;
+ /// Set of options which affects instrumentation of inline assembly.
+ MCTargetOptions MCOptions;
+
public:
virtual ~MCTargetAsmParser();
- unsigned getAvailableFeatures() const { return AvailableFeatures; }
- void setAvailableFeatures(unsigned Value) { AvailableFeatures = Value; }
+ uint64_t getAvailableFeatures() const { return AvailableFeatures; }
+ void setAvailableFeatures(uint64_t Value) { AvailableFeatures = Value; }
bool isParsingInlineAsm () { return ParsingInlineAsm; }
void setParsingInlineAsm (bool Value) { ParsingInlineAsm = Value; }
+ MCTargetOptions getTargetOptions() const { return MCOptions; }
+
void setSemaCallback(MCAsmParserSemaCallback *Callback) {
SemaCallback = Callback;
}
virtual bool ParseRegister(unsigned &RegNo, SMLoc &StartLoc,
SMLoc &EndLoc) = 0;
+ /// Sets frame register corresponding to the current MachineFunction.
+ virtual void SetFrameRegister(unsigned RegNo) {}
+
/// ParseInstruction - Parse one assembly instruction.
///
/// The parser is positioned following the instruction name. The target
/// ownership of them to the caller.
/// \return True on failure.
virtual bool ParseInstruction(ParseInstructionInfo &Info, StringRef Name,
- SMLoc NameLoc,
- SmallVectorImpl<MCParsedAsmOperand*> &Operands) = 0;
+ SMLoc NameLoc, OperandVector &Operands) = 0;
/// ParseDirective - Parse a target specific assembler directive
///
/// mnemonicIsValid - This returns true if this is a valid mnemonic and false
/// otherwise.
- virtual bool mnemonicIsValid(StringRef Mnemonic) = 0;
+ virtual bool mnemonicIsValid(StringRef Mnemonic, unsigned VariantID) = 0;
/// MatchAndEmitInstruction - Recognize a series of operands of a parsed
/// instruction as an actual MCInst and emit it to the specified MCStreamer.
///
/// On failure, the target parser is responsible for emitting a diagnostic
/// explaining the match failure.
- virtual bool
- MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
- SmallVectorImpl<MCParsedAsmOperand*> &Operands,
- MCStreamer &Out, unsigned &ErrorInfo,
- bool MatchingInlineAsm) = 0;
+ virtual bool MatchAndEmitInstruction(SMLoc IDLoc, unsigned &Opcode,
+ OperandVector &Operands, MCStreamer &Out,
+ uint64_t &ErrorInfo,
+ bool MatchingInlineAsm) = 0;
+
+ /// Allows targets to let registers opt out of clobber lists.
+ virtual bool OmitRegisterFromClobberLists(unsigned RegNo) { return false; }
+
+ /// Allow a target to add special case operand matching for things that
+ /// tblgen doesn't/can't handle effectively. For example, literal
+ /// immediates on ARM. TableGen expects a token operand, but the parser
+ /// will recognize them as immediates.
+ virtual unsigned validateTargetOperandClass(MCParsedAsmOperand &Op,
+ unsigned Kind) {
+ return Match_InvalidOperand;
+ }
/// checkTargetMatchPredicate - Validate the instruction match against
/// any complex target predicates not expressible via match classes.
}
virtual void convertToMapAndConstraints(unsigned Kind,
- const SmallVectorImpl<MCParsedAsmOperand*> &Operands) = 0;
+ const OperandVector &Operands) = 0;
+
+ virtual const MCExpr *applyModifierToExpr(const MCExpr *E,
+ MCSymbolRefExpr::VariantKind,
+ MCContext &Ctx) {
+ return nullptr;
+ }
+
+ virtual void onLabelParsed(MCSymbol *Symbol) { };
};
} // End llvm namespace
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